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Effect of stacking fault energy on pulsating fatigue behavior for fcc metals under the fully repeated loading

机译:完全重复加载下堆垛层错能量对fcc金属脉动疲劳行为的影响

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摘要

In previous studies, the relationship between stacking fault energy (SFE) and the fatigue process has been examined under the fully reversed loading in which ratcheting does not occur. In this study, under the fully repeated loading, for pure Ni (128 mJ/m~2), pure Cu (40 mJ/m~2) and Cu-35 wt% Zn (11.5 mJ/m~2) with different SFEs, the effect of fatigue damage and ratcheting damage on fatigue life was investigated. It was observed that for pure Ni, compared with pure Cu and Cu-35 wt% Zn, ratcheting damage is dominant. For Cu-35 wt% Zn, compared with pure Ni and pure Cu, fatigue damage is dominant. For pure Cu, both ratcheting damage and fatigue damage are dominant (mixed type). Thus, it was observed for the first time that high SFE tends to enhance ratcheting damage and low SFE tends to promote fatigue damage under the fully repeated loading.
机译:在以前的研究中,已经在不发生棘轮的完全反向载荷下检查了堆垛层错能(SFE)与疲劳过程之间的关系。本研究在完全重复加载的情况下,对于具有不同SFE的纯Ni(128 mJ / m〜2),纯Cu(40 mJ / m〜2)和Cu-35 wt%Zn(11.5 mJ / m〜2) ,研究了疲劳损伤和棘轮损伤对疲劳寿命的影响。观察到,与纯铜和Cu-35 wt%的Zn相比,纯Ni的棘轮损伤占主导地位。对于Cu-35 wt%的Zn,与纯Ni和纯Cu相比,疲劳损伤占主导地位。对于纯铜,棘轮损伤和疲劳损伤均占主导地位(混合型)。因此,首次观察到,在完全重复的载荷下,高SFE倾向于增强棘轮损伤,而低SFE倾向于促进疲劳损伤。

著录项

  • 来源
    《Materials Science and Engineering》 |2014年第23期|1-5|共5页
  • 作者

    S. Sakaki; M. Yoshida; S. Horibe;

  • 作者单位

    Department of Modern Mechanical Engineering, Graduate School of Waseda University, 3-4-1 Ohkubo, Shinjuku-ku, Tokyo 169-8555, Japan;

    Department of Modern Mechanical Engineering, Graduate School of Waseda University, 3-4-1 Ohkubo, Shinjuku-ku, Tokyo 169-8555, Japan,Kagami Memorial Research Institute for Materials Science and Technology, Waseda University, 2-8-26 Nishi-Waseda, Shinjyuku-ku, Tokyo 169-0051, Japan;

    Department of Modern Mechanical Engineering, Graduate School of Waseda University, 3-4-1 Ohkubo, Shinjuku-ku, Tokyo 169-8555, Japan;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Fatigue; Plastic strain amplitude; Ratcheting strain rate; Stacking fault energy; fcc metal;

    机译:疲劳;塑性应变幅度;棘轮应变率;堆积故障能量;fcc金属;

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